Telephone accessory keyboard



FIG. 1 is a top perspective view of a telephone accessory keyboard showing my new design;

FIG. 2 is a side elevation thereof;

FIG. 3 is a front perspective view thereof; and

FIG. 4 is a rear elevation thereof.

The bottom of the telephone accessory keyboard is flat and unornamented. 

The ornamental design for a telephone accessory keyboard, substantially as shown and described. 